A.A.Avdeenko, L.P.Gal`chinetskii, G.Leo*, V.P.Makhniy,
Yo.Popowski*, V.D.Ryzhikov, N.G.Starzhinskiy
Received January 12, 2000
Characteristics of surface-barrier photodiodes based on n-ZnSe(Te,O)-Ni
structure intended for UV radiation measurements in different biologically
active spectral ranges. The barrier height phi0 varies
from 1.2 to 2.0 eV, the dark current density J0, from
10-16 to 10-23 A/cm2, depending on
the doping level. The light sensitivity range is 0.20 to 0.47 mum,
the maximum monochromatic sensitivity Slambda, 0.1
to 0.15 A/W, the detecting ability and quantum efficiency at 300 K
are not less than 10-15W*cm-2*Hz-1/2
and 0.3 to 0.4 electron/quantum, respectively. The relative sensitivity
variation at lambda <= 0.4 mum within temperature range
230-350 K does not exceed 0.1 %/K. Basing on those Schottky
photodiodes with appropriate light filters, compact devices have been
developed to measure UV radiation parameters and material protecting
properties (SP Factor) in UVA (315-400 nm) and UVB (280-315 nm)
ranges.